Thursday’s morning session TEDMED focused on aging, as architects Frank Gehry and Moshe Safdie, musician Quincy Jones and TEDMED founder Richard Saul Wurman swapped stories about the indignities and consolations of growing old. Gehry said he suffers the occasional memory lapse, but that it doesn’t hinder his design process. “The way I work, sometimes it’s better if you forget what you did before.”

Afterwards, Dr. Rudolph Tanzi of the Cure Alzheimer's Fund laid out an ambitious goal of finding a cure for the illness by the year 2020. Tanzi and venture capitalist Henry McCance, who helped found the fund in 2004, described the partnership that led to the identification of new genes that seem to play a role in Alzheimer’s disease, genes that are potential targets for new drug therapies.

Bedbugs are no fan of the United Nations. They've been making a home at some of the chairs at the international organization. Along with their march toward world domination, a few other headlines caught our eye this week: news about pancreatic cancer, one of the deadliest; who is and isn't getting a flu shot; and the drinking habits of smart people.

Over the weekend, dogs detected bedbugs in conference room chairs at one office building in the complex. A U.N. spokesman said in a briefing Wednesday that the infested chairs were fumigated and none of the building occupants have reported bites. FULL POST

Even though it’s often the butt of many jokes, premature ejaculation (PE) is no laughing matter. It’s the most common type of sexual dysfunction a man can have, with many experts estimating that up to 30 percent of men have PE. In my new book Overcoming Premature Ejaculation, I use the latest research to distinguish myth from reality and offer a new approach for managing a condition that has left many men, myself included, feeling like a sexual cripple.

There’s been a lot of disagreement and discussion in the medical community about how we should define PE. But the latest, most widely accepted definition—from the International Society for Sexual Medicine (ISSM)— says that PE is a male sexual dysfunction characterized by:

ejaculation that always or nearly always occurs prior to or within about one minute of vaginal penetration;

inability to delay ejaculation on all or nearly all vaginal penetrations;

and negative personal consequences, such as distress, bother, frustration and/or the avoidance of sexual intimacy.

As a feature of CNNhealth.com, our team of expert doctors will answer readers' questions. Here's a question for Dr. Gupta.

From Indu, Waukesha, Wisconsin

"My 3-year-old daughter has been diagnosed with selective IgA deficiency. I am really worried. Can you please tell me what is this? What are her risk factors and will she live a normal life? Since three months she has had recurrent sinusitis infections and her blood test showed this deficiency ( IgA =6), No one in our family has this and both my husband and I are quite healthy. What are her options, treatment and any latest information/research in this field?"

I visited one of the largest warehouses in Port-au-Prince yesterday. It is a large structure behind a big blue gate and a handful of security guards. I went to get a better understanding of how lifesaving supplies are distributed in the middle of a cholera outbreak. Outside, workers from aid organizations were also waiting to take supplies to patients in St. Marks, the epicenter of the outbreak.

It quickly became clear that it was going to be a long day. One of the workers told me she had been waiting for several hours to pick up the supplies despite the fact that she had all the necessary paperwork and authorizations. No one was available to help her. After sitting there frustrated nearly the whole day, she eventually left empty-handed, telling me this wasn’t at all unusual. “Typical Third World red tape,” she added.

Exposure to bisphenol-A (BPA), a controversial chemical found in hard, clear plastics, is thought to increase the risk of birth defects, early puberty, obesity, brain damage, and some forms of cancer.

Add another potential problem to the list: A new study of Chinese factory workers suggests that very high levels of BPA exposure may decrease sperm count and contribute to other sperm-related problems in men.

Get a behind-the-scenes look at the latest stories from CNN Chief Medical Correspondent, Dr. Sanjay Gupta, Senior Medical Correspondent Elizabeth Cohen and the CNN Medical Unit producers. They'll share news and views on health and medical trends - info that will help you take better care of yourself and the people you love.